CCCWC Christmas Special competition voters’ comments on Clue no. 39

A clue to XMAS Stocking Filler (2 defs. + wordplay).
3 comments refer to this clue (from 3 competitors, 0 others)

Here is the text

Comments on the clue

1.	Clever combination and nicely clued
2.	Worth two points as I really like the idea and admire the challenge but I am not sure 'something for filling in' is quite right for mastic.
3.	One of the very few clues to offer an excellent, topical and (quite fairly) misleading surface.